The kinetic approach to parton production under the conditions of ultrarelativistic heavy ion collisions
2001
Dynamics of partons created through vacuum tunneling in time-dependent spatially homogenous field is studied for typical conditions of ultra-relativistic heavy-ion collisions. In the relaxation-time approximation, a thermalization scenario for such quasi-particle plasma is considered. A local equilibrium state of the system is described in the frame-work of two-component thermodynamics of particles and anti-particles. In the evolution towards an equilibrium are involved three parallel mechanisms: (i) spontaneous vacuum pair creation, (ii) back-reaction of the produced particles to the background field, (iii) collisions between the charged particles. We solve numerically a self-consistent system of the Vlasov-like kinetic equation with a source and collision term and the renormalized Maxwell equation. A possibility of introducing, the temperature conception under the condition of strong vacuum polarization is discussed.
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